Method of rerolling rails.



No. 852,983. PATENTED MAY 7,1907.

B. E.,SL IOK.

METHOD OF RBROLLING RAILS.

APPLIOATIOH FILED JAN. 19.1904.

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WITNESSES INVENTOR Ky -4QWM No. 852,983. PATENTED MAY 7; 19 o7.

' E. E. SLICK.

MBTHOD OF REROLLING RAILS.

APPLICATION FILED JAN.19.1904.

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WITNESSES- x No. 852,983.

B. E. SLICK.

PATBNTED MAY 7, 1907.

METHOD OF RBROLLING RAILS. APILIOATION rum) JAN.1B.1904

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EDWIN E. SLICK, OF PITTSBURG, l?ENNSYLVANIA.

METHOD OF REROLLING RAILS.

Specification of Letters Patent.

Patented May '7, 1907;

. Application filed January 19.1904. Serial No. 189,715.

To all whom it may concern:

Be it known that I, EDWIN E. SLICK, of Pittsburg, Allegheny county,Pennsylvania, have invented a new and useful Method of Rerolling Rails,of which the following is afull, clear, and exact description, referencebeing had to the accompanying drawings, forming part of this secification, in which 1- F i ure 1 is a side e evation of the roughingstain of rolls; Fig. 2 is a side elevation of the finishing stand ofrolls, having the reducing passes arranged to carry out my improvedmethod of re-rolling; and Fig. 3 1s a side e1e-' vation showing amodified arrangement of the roughing stand ofrolls The object of mylnvention 1S tO provide a method for re-rolling worn-out or defectiverails of heavy section into rails of lighter section, in a more rapidand economical manner than heretofore possible, and to overcome thedifficulties found in existing methods, by preventing over-filling thepasses and consequent fins; also in preventin buckling, lapping, andforming of seams w 'ch when once formed will carry through the remainingpasses and showon the rail when completed, as the steel will not weld atthe temperature 1 used in rolling.

- One method of re-riollin rails heretofore known has been first to reuce the height of the rail inroll passes with the rail in such positionthat a hne through the center of the head, web and flange was at rightangles to the axesof the rolls and then further to reduce the railthrough passes with the center line of the head, web and flange of therail parallel with the axis of the rolls. In this method the workWasdone by the to and bottom sides of the passes, the vertica sides ofthe passes merely sup orting the material -while in the rolls. Anot 1ermethod has been to roll the metal. with a line through the center'of thehead, web and flange of the rails ata slight angle with a line parallelto the axes of the rolls,

outer face of the flange 'at a ri ht angle to a line throu h the centerof the ead and web portions 0 the rail.) The disadvantages of thesemethods lie in the large'number of reducing passes necessary to req'olla rail,-on account of the small amount of red'iietion ossible in orderto avoid buckling or lapping 1n the web of the rail, the forming ofseai'ns, and the great difficulty in filling some poran le, in the next.

but with the flange of the rail; always normal to the head and web, (t.e., the

tions of the passes and in preventing overfilling and consequent fins. 3

One broad novel feature of my invention lies in bending the section sothat the base flange in the live groove of the ass is at an angle ofless than degrees'to the web while the flangein the dead groove is atanangle greater than 90 degrees.

In Fig. 1, I show five passes I, II, III,IV and'V, these being formedbetween the rolls pass as shown, the rail lies horizontally or with itsaxis parallel to the axes of the rolls. In this pass the flanges and thehead are reduced in width, that is, inthe direction trans- 2, 3 and 4 ofa three-high mill. In the first I versely to the plane of the web. Inthe next pass II, the section is bent so that the flange 5 in the livegroove extends at lessthan an of 90 degrees to the plane of the railangle we while the flange 6 1n the dead groove, is at an obtuse angle tosuchline. In the third pass the section is bent in the other directionso that the flange 5; in the .dead passis at an obtuse angle, whiletheflange 6 in the live roove is at an an le greater than a right an e. Inthe succee ing grooves down to the al, pass, the bending of the shapetakes place in each pass, each flange being at an obtuse angle in onepass and at an acute n Fi 2,1} show V, and through either one of whichthe rail is passed in coming from the fifth pass.- In this figure VII,VII are the fi'nishing'passes, in which the base flanges are restored totheir normal position, the axial line of the rail is two passes VI, VI,which follow t e preceding passes, II, III, IV andparallel to the axesof the rolls, and the" reduction. preferably takes place throughout therail section.

It will be noted that the preliminary pass, wherein the axis of the railis parallel to the axes'of the rolls may be in any oneof the firstpasses; that is in the first pass the rail axis stantially the same asthose of Fig. 1, while the pass I is an angular pass similar to thesecond pass. ith this set of roughing passes, the finishing asses may bethe same as in Fig. 2-. It wilhbe notedthat in both forms of roughingpasses, the shape is bent so that the flanges are out oftheir normal atless than the normal angle of the flange with the head and web portionsof the rail position, in the angular passes.

By inclining the one part of the flange at a greater than the normal andthe other part being rolled, I am enabled to reduce the metal bothhorizontally and vertically at the same time and .to greatly increasethe amount ofreduction in each pass. .By means of the finishing passesVI and VII shown in Fig. 2.,

the rail is further reduced and formed .to the finished shape, the'fl-ange' being restored to normal'position relatively to the web. In

this 'Wa the time required to re-roll is greatly.

- reduce and the output of the mill largely in- 1 multaneously reducingthe shape,'and finallyres'to'ring the flange to its normal positionsection; substantia creased; the poss'ibi ty of buckling. and lapping.inpthevweb ort-ion of'the rails is removed, and the orming of fins andseams during the rolling. One groove of the pass for the flange may beinclined'to a greater or less angle than thenormal angle of the flangewith the head and Web portions of the rail, the groove for the otherflange remaining normal. The web, may be bent intermediately so that theflanges are out of their normal position to a' part only of the web, andother variations in the roll passes may be 2 made without departing frommy invention.

I claim':

' ,1. The method of re-rolling rails, consisting in .feeding arailthrough a rel-ling pass, bending one of the base flanges inwardlytherein to an acute angle-With the web, si-

and finishing the section in'a'later pass or passes; substantially asdescribed. a

2.. The method of re:rolling rails, consisting in' feeding the railthrougha rolling pass with its web in an inclined position relative tothe axes of the. rolls, simultaneously bending one of the base flangesinwardly to an acute angle. to the web, and reducing the shape in bothdirections, and finally restoring the flange to its normal position andfinishing the section; substantially as described,

3. The method of re-rolling rails, consisting in feeding the'railthrough a rolling pass with its webat an angle to the axes of the rolls,bending the base flange in the live groove inwardly to an acute anglewith the web, simultaneously reducing the shape in both directions, andfinally restoring the flange to its normal position and finishing the yas described.

.4. The method of re-rolling rails, consisting in feeding the rail intoa rolling pass, bending the flange in the live groove to an acute anglewith the web,. and'reducing the section, then feeding the section intoanother pass with the other flange in the live groove, and bending saidother flange inwardly, and finally restoring the flanges to normalposition and finishing the section in a later'pass or passes;substantially as described.

5. The method ofjre-rolling rails, consis t ing in feeding the railthrough a rolling pass, bending the section therein so that the anglebetween the-web and the flange in the live groove is less than a rightangle, simultane ;ously redu cing the shape, and finally restor-' ingthe flange to its normal position and finishing the section in a laterpass or passes; substantially as described.

6i Themethod of re-rolling rails, consisting in feeding the same throughrolling passes, bending the sha eso that the angle between the web and te flange in the live groove is less thana right angle, then feeding theshape through another pass With-the" other flange in the live groove,and simultaneously bending the-shape so that the angle between the weband the other flange is less than .a right angle, and-finally restoringthe flanges to their normal osition and finishing the section;substantial y as described.

7. :The methodof re-rolling rails, consisting in feeding the sectionthrough rolling passes with the web-at an angle to the aXes of therolls, and alternately bending the opposite base flanges to an anglewith the web which is less than a right angle in the successive passes"substantially as described.

8; The method of re-rolling rails, consisting in feeding the section.through a succession of rolling passes with the plane of the web at anarigleto the axes-of the rolls, alter nately feeding the o positebaseflanges in the live groove, and a ternately bending said flanges, sothat the angle between the flange in the live web is less tan a rightangle, and at the same time bending the shape so that the at an angle ofless than 90 degrees to the Web,

and the other flange is at an angle of'more than 90 degrees to the web,passing the first named flange through the live groove, and the latterobtuse angle flange through the oove and the plane of the dead groove,then bending in the opposite direction, and passing the metal With theop posite flanges in the respective grooves, and then restoringtheflangesto their normal p0- 20 the section; substantial 5 lel to the rollaxes, then bending the shape so that the angle between the web and theflange in the live groove is less than a right angle, simultaneouslyreducing the shape, and finally restoring the flange to its normal toposition and finishing the section in a later pass or passes;substantially as described.

.1 12. The method of re-rolling rails, consistumg in rolling the railwith its axis arallel to "the roll axes, then rolling the rail with its15 axis at an angle to the roll axes, and simultaneously bending it sothat the angle between the Web and the flange in the live grooveis lessthan a right angle, and finally restoring the flange to its normal)osition and finishing l y as described.

13. The method of rolling flange sha es, consisting in feeding the shapethrougi a rolling pass, bending the section therein so that theanglebetween the Web and the flange in the live groove is less than a rightangle, simultaneously reducing the shape, and finally restoring theflange to its normal position and finishing the section in a later passor passes; substantially as described.

14. The method of rolling flanged sha es, consisting in feeding theshape throng a rolling pass with its web at an angle to the axes of therolls, bending the section therein so that the angle between the web andthe flange in the live groove-is less than a right angle, simultaneouslyreducing the shape, and finally restoring the flange to its normalposition and finishing the section; substantially as described.

In testimony whereof, have hereunto set my hand.

EDWIN E. SLICK.

Witnesses:

JOHN MILLER, H. M. CORWIN.

